ASP.NET大批量数据处理，97-2003Excel导入、导出

--引用dll 免费下载地址：

http://download.csdn.net/detail/qq285679784/8569327

--命名空间

using System.Configuration;

using System.Data.OleDb;

using System.Data.SqlClient;

/// <summary>

/// 导出正式Excel文件，用于导入盘点数据

/// </summary>

/// <param name="ds2"></param>

private void ToExcel(DataSet ds2)

{

if (ds2.Tables[0].Rows.Count > 0)

{

DataTable dt = ds2.Tables[0];

string filename = "KCPD_" + Session["UserName"].ToString() + "_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".xls";

//临时存放路径

string filePath = Server.MapPath("~/upload/" + filename);

//Excel模版

string masterPath = Server.MapPath("~/upload/Master/PDCK.xls");

//复制Excel模版

File.Copy(masterPath, filePath);

#region 将文件的只读勾取消 以免发生不必要的错误

// 先把文件的属性读取出来

FileAttributes attrs = File.GetAttributes(filePath);

// 下面表达式中的 1 是 FileAttributes.ReadOnly 的值

// 此表达式是把 ReadOnly 所在的位改成 0,

attrs = (FileAttributes)((int)attrs & ~(1));

File.SetAttributes(filePath, attrs);

#endregion

// 使用OleDb驱动程序连接到副本

OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;'");

using (conn)

{

conn.Open();

// 增加记录

for (int i = 0; i < dt.Rows.Count; i++)

{

OleDbCommand cmd = new OleDbCommand(@"INSERT INTO [Sheet1$]

(

[配件ID],[识别码],[配件名称],[配件规格],[配件代码],[版本],

[上月库存],[采购入库],[良品入库],[维修返回],[维修入库],

[调整库存],[调拨入库],[销售出库],[免费出库],

[调拨出库],[维修出库],[其它出库],[现有库存],[盘点库存]

)

values('" + dt.Rows[i]["配件ID"] + "', '" + dt.Rows[i]["识别码"] + "','" + dt.Rows[i]["配件名称"] + "', '" + dt.Rows[i]["配件规格"] + "','" + dt.Rows[i]["配件代码"] + "', '" + dt.Rows[i]["版本"] + "', '" + dt.Rows[i]["上月库存"] + "','" + dt.Rows[i]["采购入库"]
+ "', '" + dt.Rows[i]["良品入库"] + "', '" + dt.Rows[i]["维修返回"] + "','" + dt.Rows[i]["维修入库"] + "', '" + dt.Rows[i]["调整库存"] + "', '" + dt.Rows[i]["调拨入库"] + "', '" + dt.Rows[i]["销售出库"] + "', '" + dt.Rows[i]["免费出库"] + "', '" + dt.Rows[i]["调拨出库"] + "', '" + dt.Rows[i]["维修出库"]
+ "', '" + dt.Rows[i]["其它出库"] + "', '" + dt.Rows[i]["现有库存"] + "', '" + dt.Rows[i]["盘点库存"] + "')", conn);

cmd.ExecuteNonQuery();

}

conn.Close();

}

// 输出副本的二进制字节流

HttpContext.Current.Response.Charset = "UTF-8"; // 或UTF-7 以防乱码

HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;

Response.ContentType = "application/ms-excel";

Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(System.Text.Encoding.GetEncoding(65001).GetBytes(filename)));

Response.BinaryWrite(File.ReadAllBytes(filePath));

//删除副本

File.Delete(filePath);

}

}

#endregion

#region 导入Excel

/// <summary>

/// 立即导入Excel

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void btnUp_Click(object sender, System.EventArgs e)

{

if (this.drop_DepotId_In.SelectedItem.Value == "-1")

{ US.Components.MessageBox.Show(this.Page, "仓库不能为空!"); return; }

if (this.fileExcel.PostedFile.FileName.Length == 0)

{ excel_msg.Text = "导入返回信息：没有选择文件！"; this.excel_msg.ForeColor = System.Drawing.Color.Red; return; }

string ext = this.fileExcel.PostedFile.FileName.Substring(fileExcel.PostedFile.FileName.LastIndexOf('.') + 1).ToLower();

if (ext != "xls")

{ excel_msg.Text = "导入返回信息：只能导入xls格式的Excel文件！"; this.excel_msg.ForeColor = System.Drawing.Color.Red; return; }

//记录导入耗时

DateTime time = DateTime.Now;

US.Components.UploadFileHelper upfile = new US.Components.UploadFileHelper();

upfile.UserId = Session["UserID"].ToString();

upfile.Upload_Type = 0;

upfile.Save(this.fileExcel.PostedFile);

//临时表名

string Nname = ("KCPD_" + Guid.NewGuid().ToString()).Replace("-", "_");

//创建唯一的临时表

string CreateSql = string.Format(@"

CREATE TABLE [dbo].[{0}]

(

[ID] [int] IDENTITY(1,1) NOT NULL,

[f_id] [varchar](200),

[sn] [varchar](200),

[FittingName] [varchar](200),

[SpecName] [varchar](200),

[FittingId] [varchar](100),

[FittingVersion] [varchar](50),

[LastAmount] [varchar](200),

[采购入库] [varchar](200),

[良品入库] [varchar](200),

[维修返回] [varchar](200),

[维修入库] [varchar](200),

[调整库存] [varchar](200),

[调拨入库] [varchar](200),

[销售发货] [varchar](200),

[免费发货] [varchar](200),

[办事处发货] [varchar](200),

[维修] [varchar](200),

[其它] [varchar](200),

[现有库存] [varchar](200),

[盘点库存] [varchar](200),

[CollectTime] [datetime] ,

[DepotId] [int],

[UserId] [int]

)", Nname);

run.ExecSQL(CreateSql);

try

{

string connectionString = ConfigurationSettings.AppSettings["ConnectionString"].Replace("True", "False");

string constr = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + upfile.FilePath + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'";

string sqlstr = "select * from [Sheet1$]";

#region OleDb导入

using (OleDbConnection sourceConnection = new OleDbConnection(constr))

{

sourceConnection.Open();

OleDbCommand ocomm = new OleDbCommand(sqlstr, sourceConnection);

OleDbDataReader reader = ocomm.ExecuteReader();

using (SqlConnection destinationConnection = new SqlConnection(connectionString))

{

destinationConnection.Open();

using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connectionString))

{

bulkCopy.BatchSize = 1000;//每次传输的行数

bulkCopy.BulkCopyTimeout = 3600;

//f_id,sn,FittingName,SpecName,FittingId,FittingVersion,LastAmount,采购入库,良品入库,维修返回,

//维修入库,调整库存,调拨入库,销售发货,免费发货,办事处发货,维修,其它,现有库存,盘点库存,

//CollectTime,DepotId,UserId

//第一个参数为Excel中的字段

//第二个参数为数据库表中的字段

bulkCopy.ColumnMappings.Add("配件ID", "f_id");

bulkCopy.ColumnMappings.Add("识别码", "sn");

bulkCopy.ColumnMappings.Add("配件名称", "FittingName");

bulkCopy.ColumnMappings.Add("配件规格", "SpecName");

bulkCopy.ColumnMappings.Add("配件代码", "FittingId");

bulkCopy.ColumnMappings.Add("版本", "FittingVersion");

bulkCopy.ColumnMappings.Add("上月库存", "LastAmount");

bulkCopy.ColumnMappings.Add("采购入库", "采购入库");

bulkCopy.ColumnMappings.Add("良品入库", "良品入库");

bulkCopy.ColumnMappings.Add("维修返回", "维修返回");

bulkCopy.ColumnMappings.Add("维修入库", "维修入库");

bulkCopy.ColumnMappings.Add("调整库存", "调整库存");

bulkCopy.ColumnMappings.Add("调拨入库", "调拨入库");

bulkCopy.ColumnMappings.Add("销售出库", "销售发货");

bulkCopy.ColumnMappings.Add("免费出库", "免费发货");

bulkCopy.ColumnMappings.Add("调拨出库", "办事处发货");

bulkCopy.ColumnMappings.Add("维修出库", "维修");

bulkCopy.ColumnMappings.Add("其它出库", "其它");

bulkCopy.ColumnMappings.Add("现有库存", "现有库存");

bulkCopy.ColumnMappings.Add("盘点库存", "盘点库存");

//tbl_cell_gh_temp为目标表

bulkCopy.DestinationTableName = Nname;

//将数据复制到数据库

bulkCopy.WriteToServer(reader);

//关闭reader

reader.Close();

/*对导入的数据，进行全面扫描。

如果有异常则导入失败，将异常信息以Excel的方式返回客户端，提供下载

(返回的InsertRow=0，UpdateRow=0则为异常)*/

//获取影响行数

DataSet ds = run.GetDataSet(

string.Format(@"

exec SP_Check_Import_T_Fittings_Collect_tmp '{0}',{1},{2},'{3}',{4}", Nname, Session["UserID"].ToString(), drop_DepotId_In.SelectedValue, this.txt_inTime.Text + "-01", this.txtIsImport.Value)

);//@Nname、@UserID、@DepotID、@CollectTime、@IsImport

//Insert总数

string InsertRow = ds.Tables[0].Rows[0]["InsertRow"].ToString();

string UpdateRow = ds.Tables[0].Rows[0]["UpdateRow"].ToString();

//无异常，导入成功提示

if (InsertRow != "0" || UpdateRow != "0")

{

//隐藏下载Excel按钮

Linkbtn.Visible = false;

//Tips

excel_msg.Text = "<br/><br/>导入成功，总耗时：" + (DateTime.Now - time).ToString() + "<br/><br/>共插入数据:" + InsertRow + "条，修改数据：" + UpdateRow + "条";

excel_msg.ForeColor = System.Drawing.Color.Blue;

}

else

{

//Tips

excel_msg.Text = "<br/><br/>导入失败，数据存在异常，查看异常详细信息，请下载:";

excel_msg.ForeColor = System.Drawing.Color.Blue;

//将异常数据缓存起来

Cache.Insert("Error", ds);

//显示下载Excel按钮

Linkbtn.Visible = true;

}

}

}

}

#endregion

}

catch (Exception ex)

{

excel_msg.Text = "导入返回信息：导入失败！错误信息：" + ex.Message;

this.excel_msg.ForeColor = System.Drawing.Color.Red;

}

finally

{

if (upfile.FilePath != null)

{

delfile(upfile.FilePath);//删除已上传文件

}

//删除临时表

//string sql = "drop table [dbo].[" + Nname + "]";

//run.ExecSQL(sql);

}

}

/// <summary>

/// 删除上传的临时文件

/// </summary>

/// <param name="filestr"></param>

private void delfile(string filestr)

{

FileInfo fi = new FileInfo(filestr);

if (fi.Exists)

{

fi.Delete();

}

}

/// <summary>

/// 下载异常信息

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void Linkbtn_Click(object sender, EventArgs e)

{

if (Cache["Error"] != null)

{

DataSet ds = (DataSet)Cache["Error"];

//数据存在异常，将异常详细信息导入Excel放到输出流，提供用户下载浏览

CreateExcel(ds, "1", "系统扫描结果.xls");

}

else

{

excel_msg.Text = "无异常信息！";

this.excel_msg.ForeColor = System.Drawing.Color.Red;

//隐藏下载Excel按钮

Linkbtn.Visible = false;

}

}

/// <summary>

/// 将DataSet中的数据导出到Excel

/// </summary>

/// <param name="ds"></param>

/// <param name="typeid"></param>

/// <param name="FileName"></param>

public void CreateExcel(DataSet ds, string typeid, string FileName)

{

HttpResponse resp;

resp = Page.Response;

resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");

resp.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ";");

//resp.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);

string colHeaders = "", ls_item = "";

int i = 0;

//定义表对象和行对像，同时用DataSet对其值进行初始化

DataTable dt = ds.Tables[1];

DataRow[] myRow = dt.Select("");

// typeid=="1"时导出为EXCEL格式文档；typeid=="2"时导出为XML格式文档

if (typeid == "1")

{

//取得数据表各列标题，各标题之间以\t分割，最后一个列标题后加回车符

for (i = 0; i < dt.Columns.Count; i++)

{

if (i == dt.Columns.Count - 1)

{

colHeaders += dt.Columns[i].Caption.ToString() + "\n";

}

else

{

colHeaders += dt.Columns[i].Caption.ToString() + "\t";

}

}

//向HTTP输出流中写入取得的数据信息

resp.Write(colHeaders);

//逐行处理数据

foreach (DataRow row in myRow)

{

//在当前行中，逐列获得数据，数据之间以\t分割，结束时加回车符\n

for (i = 0; i < dt.Columns.Count; i++)

{

if (i == dt.Columns.Count - 1)

{

ls_item += row[i].ToString() + "\n";

}

else

{

ls_item += row[i].ToString() + "\t";

}

}

//当前行数据写入HTTP输出流，并且置空ls_item以便下行数据

resp.Write(ls_item);

ls_item = "";

}

}

else

{

if (typeid == "2")

{

//从DataSet中直接导出XML数据并且写到HTTP输出流中

resp.Write(ds.GetXml());

}

}

//写缓冲区中的数据到HTTP头文档中

resp.End();

}

#endregion

}